Wera - Diamond Coated Bit Set 9Pc (Ph/Tx) Impaktor, 8751/67-9/Imp D - 5057682002 897/4 Impaktor R Bit Holder - 1 x 1/4"x75 851/1 IMP DC Phillips Bits - 3 x PH 2x25; 1 x PH 3x25 867/1 IMP DC Torx Bits - 3 x TX 25x25; 1 x TX 30x25; 1 x TX 40x25 diamond coating grips the fastener and prevents camout. Magnet ring holds even large screws in place on the bit for accurate fastening